/* 全局样式 */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background-color: #343a40;
    color: white;
    padding: 15px 0;
}

.header h1 {
    margin: 0;
    font-size: 24px;
}

/* 导航菜单 */
.navbar {
    background-color: #495057;
}

.navbar ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.navbar li {
    padding: 10px 15px;
}

.navbar li a {
    color: white;
    text-decoration: none;
}

.navbar li a:hover {
    text-decoration: underline;
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th, .table td {
    padding: 10px;
    border: 1px solid #dee2e6;
    text-align: left;
}

.table th {
    background-color: #e9ecef;
}

.table tr:nth-child(even) {
    background-color: #f8f9fa;
}

.table tr:hover {
    background-color: #e2e6ea;
}

/* 表单样式 */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
}

.btn {
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    color: white;
}

.btn-primary {
    background-color: #007bff;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-warning {
    background-color: #ffc107;
    color: #212529;
}

.btn-success {
    background-color: #28a745;
}

/* 卡片样式 */
.card {
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    padding: 15px;
}

.card-header {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e9ecef;
}

.card-body {
    padding: 10px 0;
}